214216999 has 2 divisors, whose sum is σ = 214217000. Its totient is φ = 214216998.

The previous prime is 214216979. The next prime is 214217021. The reversal of 214216999 is 999612412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214216999 - 2¹¹ = 214214951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214216969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107108499 + 107108500.

It is an arithmetic number, because the mean of its divisors is an integer number (107108500).

Almost surely, 2^214216999 is an apocalyptic number.

214216999 is a deficient number, since it is larger than the sum of its proper divisors (1).

214216999 is an equidigital number, since it uses as much as digits as its factorization.

214216999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 214216999 is about 14636.1538322061. The cubic root of 214216999 is about 598.3445096018.

The spelling of 214216999 in words is "two hundred fourteen million, two hundred sixteen thousand, nine hundred ninety-nine".